20 cows were killed by lightning
© CEN20 cows were killed by lightning
This is the distressing moment a farmer discovered his 20 cows dead after they had apparently been struck by lightning - freezing their blood in the process.

The gruesome deaths are thought to have happened during a thunderstorm on the Geras Mountain in the Spanish municipality of Geras de Gordon.

In the clip, the creatures' corpses are seen strewn across the mountain.

The farmer had reportedly rented the whole mountain so the cattle could graze.

But - despite the height at which they were living - neighbours claimed it is uncommon for lightning to strike cattle.

The regional government has sent a team of vets to take samples from the dead cows for postmortem examination.

Jose Domingo Cuesta, a local vet, said to local media that he knew about the case when a hunter sent him the footage.

"As soon as I saw it I said that the deaths had been caused by a lightning strike," he said.

"The lightning spread through the land and went into their nails.

"For those large animals the effect is terrible. It goes into them, their blood is frozen.

"It happens in natural circumstances, it is unpredictable. I have had cases where the lightning goes through a chimney, spreads through the barn and kills the animals".

It has not been officially confirmed what caused the deaths.